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Blood

Blood is a bodily fluid consisting of plasma, blood cells, and platelets that is circulated by the heart through the vertebrate vascular system, carrying oxygen and nutrients to and waste materials away from all body tissues. In many species, it also carries hormones and disease-fighting substances. In this category, you will find questions about the blood in your body, including blood types, blood diseases, and the function of blood.

9,936 Questions

What gives red blood cells there red color?

They haemoglobin pigment present in the blood gives it the red colour.this pigment is found in the RBCs hence making them red in colour.

Why is hemoglobin in mammals confined with a red blood cell instead of being dissolved in plasma?

A red blood cell contains about 200 million hemoglobin molecules. If all this hemoglobin was in the plasma rather than inside the cells, blood would be so "thick" that the heart would have a difficult time pumping it through. The thickness of blood is called viscosity. The greater the viscosity of blood, the more friction there is and more pressure is needed to force blood through the heart and vessels.Since hemoglobin is a respiratory pigment the efficiency of oxygen transport is high in this closed and packaged model of the red blood cell.

How many cells does a human body have?

Cells in the entire body can range from five trillion to fifty trillion that can be in different sizes. A cell is the smallest functional and structural unit of an organism.

When a finger is cut why does the blood come out?

Fingers are very "veiny" When cut, expect more blood than neccasary. The blood will flow temporarly till the platelets come and form a scab which later heals the wound as WBC eat away foriegn bodies and the body repairs through use of nutrition for cells.

What does blood tissue do?

The blood tissue in humans and other animals is responsible for delivering nutrients and oxygen to cells. It also transports metabolic waste away from certain cells.

What keeps the heart from overfilling with blood?

arteries and veins. plus the constant pumping of the blood

What does low basophils mean?

A basophil is a type of White Blood Cell found in blood. It is largely responsible for producing an immediate and prolonged inflammatory response to antigenic stimulation (e.g, ragweed pollen) in the body. Other cells, such as Mast cells, also produce inflammatory responses.

A low basophilic count may be symptomatic of thyrotoxicosis, acute hypersensitivity reactions, and infection.

General info: Basophils are a type of granulocyte (that is, a cell that contains granules) found in blood. Its name comes from the fact that it is basophillic (blue - loving or base-loving) and stains blue in an H/E stain (hematoxylin and eosin). Eosinophils are often recruited to the sight of inflammation to release histaminase to tone down the inflammatory response.

Is it normal for a male to have 15.6 hemoglobin?

This is completely normal. The average Hemoglobin in women is 14-16. In men the average is 14-18.

What is a normal person's blood sugar one hour after eating?

When you've just eaten, blood sugar rises to a high level, and the amount depends on what you eat, how efficient your body is, and lots of other things. Normal after eating can be anywhere from 100 to 200 mg/dL (5.5 to 11 mmol/L)

The signs of diabetes include blood sugar that doesn't return well below 100mg/dL after a couple of hours after eating.

How do the platelets stop the bleeding whenever you experience a cut or wound on your skin?

i want to answer this question because all other answers related to this r completely unscientific .

they stop bleeding by turning fibrinogen protein with Ca into fibrin which becomes fibrin polymar . this works as a filter . it is attached to the ruptured vessel wall . the cell and other substances get trapped into it . in this way it helps in stops bleeding .

Do you have a high white count after abdominal surgery?

Yes. Your body is responding to what it see as a foreign invasion.

Do the hematocrit and hemoglobin of blood measure the same?

Yes and no.... hemoglobin is the part of the blood that actually carries the oxygen - hematocrit is the measure of red blood cells. The 2 are definitely related but measure differences in the same family

The presence of blood in the urine may be indicative of what?

maybe go to a doctor.

prescence of blood in urine is a sign of cancer

What to eat to increase blood in body?

The food that you can eat to build up ur blood are rasins, grapes and drinking grape juice because all these foods are rich in iron that build up blood. 1.Meat(lamb, beef/calf liver, liver from organically raised cattle, fish)

2.Blackstrap molasses(1 tablespoon in a cup of hot water drank as a tea)

3.Dark green vegetables(spinach, alfalfa, asparagus, cabbage, broccoli, parsley, celery, kale, cucumbers, leeks, watercress)

4.Dried fruit(apricots, raisins, figs, dates, peaches, prunes, and pears)

5.Fresh berries(cherries, berries, bananas, dark grapes

6.Liver foods ( apples, beets, carrots, yams, legumes, whole grains)

7.Black cherry juice, purple grape juice

8.Garbanzo beans

9.Goat milk

What is the difference between fetal blood flow and adult blood flow?

child are playful and adult care about serious things for their life.

Children think in the short term and mostly about their own needs.

Adults think in the long term and how they can help others: be productive.

What measurements do red blood cell indices include?

Definition

Red blood cell (RBC) indices are part of the complete blood count (CBC) test. They are used to help diagnose the cause of anemia, a condition in which there are too few red blood cells.

The indices include:

  • Average red blood cell size (MCV)
  • Hemoglobinamount per red blood cell (MCH)
  • The amount of hemoglobin relative to the size of the cell (hemoglobin concentration) per red blood cell (MCHC)

See also: RBC count

Alternative Names

Erythrocyte indices; Blood indices; Mean corpuscular hemoglobin (MCH); Mean corpuscular hemoglobin concentration (MCHC); Mean corpuscular volume (MCV); Red blood cell indices

How the test is performed

Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.

Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.

Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.

In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.

The values for MCHC, and MCH are calculated from the hemoglobin (Hgb), hematocrit(Hct), and RBC count:

  • MCHC = Hgb/Hct
  • MCH = Hgb/RBC count

The MCV is measured directly by a machine.

How to prepare for the test

No special preparation is necessary.

How the test will feel

When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging sensation. Afterward, there may be some throbbing.

Why the test is performed

RBCs transport hemoglobin which, in turn, transports oxygen. The amount of oxygen tissues receive depends on the amount and function of RBCs and hemoglobin.

The MCV reflects the size of red blood cells. The MCH and MCHC reflect the hemoglobin content of red blood cells. These RBC measures are used to diagnose types of anemia.

Anemias are defined based on cell size (MCV) and amount of Hgb (MCH).

  • MCV less than lower limit of normal: microcytic anemia
  • MCV within normal range: normocytic anemia
  • MCV greater than upper limit of normal: macrocytic anemia
  • MCH less than lower limit of normal: hypochromic anemia
  • MCH within normal range: normochromic anemia
  • MCH greater than upper limit of normal: hyperchromic anemia
Normal Values
  • MCV: 80 to 100 femtoliter
  • MCH: 27 to 31 picograms/cell
  • MCHC: 32 to 36 grams/deciliter

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

What abnormal results mean

This test is used to diagnose the cause of anemia. The following are the types of anemia and their causes:

What the risks are

Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.

Other risks associated with having blood drawn are slight but may include:

  • Excessive bleeding
  • Fainting or feeling light-headed
  • Hematoma (blood accumulating under the skin)
  • Infection (a slight risk any time the skin is broken)
References

Zuckerman K. Approach to the anemias. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 162.

How much blood does a donor give?

Current FDA guidelines allow a maximum of 10.5 ml/kilogram body weight of whole blood to be collected every eight weeks. The majority of blood collection facilities use 500 ml whole blood bags, with an additional 50 ml (10%) allowed to be drawn for mandated screening tests. This volume equates with a body weight for blood donation of 110 lbs or more (with acceptable hematocrit/hemoglobin levels).

What is the effect of Erythrocyte sedimentaiton rate is 56?

An elevated SED rate usually indicates an inflammatory process underway in the body.

Which element is included in hemoglobin molecule?

i think that hemoglobin is combination of iron and other minerals in body(human)